I previously owned a 2015 Yukon XL Denali and a 2018 Yukon Denali shorty so I am pretty familiar with the Yukons. I am now looking at a 2019 Suburban Premiere, and comparing packages and options pretty closely to my prior Yukon Denalis. This particular suburban has the max trailering package with the brake controller as well as the power running boards. Both have rear entertainment systems. So, other than the 6.2 versus 5.3 difference, and other than the badging, what other differences are there in these two models? Like the little things to look for. With those options listed they are pretty darn close. Thanks!